Adjustable span tine pallet jack

Patent metadata

Field	Value
Publication number	US-11260890-B2
Application number	US-202117226194-A
Country	US
Kind code	B2
Filing date	Apr 9, 2021
Priority date	Feb 25, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A pallet jack includes a base and a pair of tines extending from the base. The pair of tines including a first tine and a second tine. A load wheel supports an outer end of each of the pair of tines. Each load wheel is configured to move toward and away from the respective tine to raise the tine off a floor on which the load wheel is supported. The first tine including a support surface configured to selectively be a lowermost surface of the tine to facilitate lateral displacement of the first tine.

First claim

What is claimed is:

1. A method for operating a pallet jack including the steps of:
a) deploying a support surface below a first tine such that the support surface contacts a floor;
b) moving the first tine away from a second tine while the first tine is supported on the floor by the support surface;
c) deploying a first load wheel below an outer end of the first tine; and
d) moving the first load wheel away from the first tine to raise the first tine relative to the floor.

2. The method of claim 1 wherein the support surface is on a side wheel, wherein the side wheel is rotatable about a lateral axis generally perpendicular to an axis of the load wheel.

3. The method of claim 1 wherein steps a) and c) are both performed by moving a push rod in a direction parallel to the first tine.

4. A method for operating a pallet jack including the steps of:
a) deploying side wheels below a first tine and a second tine such that the side wheels contact a floor;
b) after said step a), moving the first tine away from the second tine while the first tine and the second tine are supported on the floor by the side wheels;
c) after said step b), deploying a first load wheel below an outer end of the first tine and a second load wheel below an outer end of the second tine; and
d) moving the first load wheel away from the first tine to raise the first tine relative to the floor and moving the second load wheel away from the second tine to raise the second tine relative to the floor.

5. The method of claim 4 wherein the side wheels are rotatable about a lateral axis generally perpendicular to an axis of the associated load wheel.

6. The method of claim 5 wherein steps a), c) and d) are performed by moving a push rod in a direction parallel to the first tine and the second tine.

7. The method of claim 6 wherein the side wheel below the first tine is rotatable on an axis perpendicular to an axis of the load wheel of the first tine.

8. The method of claim 7 wherein the side wheel below the first tine is pivotable in a plane parallel to a vertical plane through the first tine.

9. The method of claim 8 wherein the side wheel below the first tine is rotatably mounted to a side arm pivotable about the axis of the load wheel of the first tine.

Assignees

• Rehrig Pacific Co

Inventors

• Kalinowski Dane Gin Mun

Classifications

• B62B2203/10

  comprising lifting means · CPC title

• B62B3/06 Primary

  for simply clearing the load from the ground (masted lift trucks B66F) · CPC title

• B66F7/0641

  Single levers, e.g. parallel links · CPC title

• B66F9/12

  Platforms; Forks; Other load supporting or gripping members · CPC title

• B62B2203/20

  using forks or tines · CPC title